<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="styleSheet" type="text/css" href="2.css"/>
</head>
<body>
    <p>标题</p>
    <a href="">链接</a>
    <button type="button">按钮</button>
    <div class="container">
        <div class="float-left"></div>
        <div class="float-right"></div>
        <div class="text">A</div>
    </div>
    <div class="flex-container">
        <div class="flex-item">B</div>
        <div class="flex-item">C</div>
        <div class="flex-item">D</div>
        <div class="flex-item">E</div>
        <div class="flex-item">F</div>
    </div>
</body>
</html>